Roller side bearing.



A. STUCKI.

ROLLER SIDE BEARING. APPLICATION FILED III/w28. IoIa.

Il''IIIIIIIIIIIIIIIIIIII'IIIIr FIGS WITNESSES.- @A 1 VEA/TOR.

A T TORNE'Y.

f Grade steel.

ARNOLD STUCKI, OF PITTSBURGH, PENNSYLVANIA.

ROLLER SIDE BEARING.

Tonall whom t may concern Be it known that I, ARNOLD ST'UoxI, a resident of Pittsburgh, in the county of Allegheny and Stateof Pennsylvania, have invented a new and useful Improvement in Roller Side Bearings, of which the followino lis a specication.

llhis invention relates to anti-friction sidel bearings for railway cars. Its object isto provide a device for this purpose which allows for the full angular movement of the car holsters with a relatively limited or short travel of the anti-friction device; one in which the bearing surfaces are straight and plain from end to end, and which, as well as the anti-friction member itself, can be formed by yrolling and therefore made of high grade steel, which adds to their ability to withstand severe service; one which is easy to inspect, which is not liable to become clogged with dirt, ice, or the like, which, will 'not rattle, and in which the anti-friction roller will valways be in proper position.

In the accompanying drawings, Figure 1 is an end elevation of the device looking endwise ofthebolsters; Fig. 2 is a side elevation of the device; and Fig. 3 is aplan view of the same. l e

In the drawings, 1 represents a portion of the body bolster, Y2 a portion of the truck bolster, 3 the upper bearing plate carried by the body bolster, and 4 the bottom bearing plate carried by the truck bolster. The latter is shown connected directly to the truck bolsterand is ay plain iatsurfaced plate, without anges, projections, or the like, so that it can be formed by rolling from high g The upper bearingv plate may also, if desired, be secured directly to the body bolster, but, as shown, is secured to a bearing member 5 secured to the body bolster. The upper bearing plate 3is also aplain flatsurfaced plate, whichcan be formed by rolling. The interposed anti-friction member is in the form yof a roller 8 with a plain exterior surface so that it can be formed from a piece of cold rolled shafting or steel, and which roller is adapted to travel between the upper and lower bearing plates.

For the purpose of returning this roller to central position when the holsters are in nor' suitable spring means mal position, I provide the roller but also which not only centers Specification of Letters Paten Patented Mar. 18, 1919.

Application filed May 28, 1918. Serial No. 236,998.

guides it and holds it vin contact with one of the bearing surfaces and thereby prevents rattling.

As illustrated, the roller is provided with an axial bore through which extends, loosely, a circular axle 9, with its ends projecting beyond the ends of the roller. Operatively connected to each end of the axle 9 is a spiral or convolute spring 10, one on each end ofthe roller. The inner end of each spring is coiled to form an eye 11 which encircles the end of the axle 9, while its outer end 12 is secured to the bearing member 5, and, in the form illustrated, the two ysprings at the opposite ends of the rollers are formed as a unit, with a connecting portion 13 lying in a groove in the lower face of the bearing member 5 and with the adjacent vertical portions 12 engaged in notches 14 in the edges of the upper bearing plate 3. The transverse connecting portion is therefore clamped between the upper bearing plate 3 and the bearin member 5, and therefore the springs aregheld with the two convolutins substantially rigidly in position, concentric with the roller and parallel to the ends of the roller. To prevent the axle 9 from slipping out endwise, suitable means are provided at its ends, outside of the springs 10, such as head 15 on one end and a colar 16 and pin or cotter 17 on the opposite en The device operates as follows:

Normally, when the the roller is in its central position and held against the top bearing plate by means of the spring 10. When the body bolster comes down it carries the roller against the bottom bearing plate 4 and if the truck then swivels under the car the roller is caused to travel toward one end of the bearing plates. The action is a true rolling one, both at the top and bottom vof the roller and therefore is substantially frictionless. As the roller travels toward the ends of the bearing plates the inner ends of the springs are carried with it and consequently the springs are flexed and straightened out to some extent and thereby put under tension. As soon as the body bolster again rises the springs re-coil and bring the roller back to central position, so that the roller, whenever theV normal side bearing clearance occurs, is `in proper position to again receive the load o the body bolster and to roll in either direction depending upon the direction of the swiveling of the truck under the car.

lith the construction shown, the roller need have only a short bodily movement due to the fact that there is a double travel, one at its bottom and one at its top. Consequently, the roller can be cylindrical without producing any material amount of slippage due to the arcuate movement ot the bolsters. lt desired, however, the roller can be made conical and thereby well adapted for a very long travel in an arcuate. path.

lt is also obvious that the roller instead of being connected to the upper bearing,l member, as illustrated, can be similarly connected to the lower bearing member, and in that case would be held in Contact with the lower bearing' member.

The side bearing described provides for a large relative movement between the body bolsters with a very short trave-l of the roller; it enables the use of straight bearing plates and a plain faced roller, without intereng'aging teeth or other means and Jthereby enables these parts to be formed by a rolling process and consequently formed of' very durable metal so that it will withstand severe service; it will not rattle, is easy to inspect, prevents the roll from becomingl aslrew, but nevertheless insures the roller always being' in proper position to roll iu either direction whenever the holsters come together. The movement is a true rolling one and hence the bearing' is substantially Jrictionless.

What. l claim is:

l. In an anti-friction side bearing', the combination with plain dat upper and lower bearing' members, of an interposed roller, and a spring` at each end of the roller, each spring being' rigidly secured at one end to one ot' the bearing member,1 and having4 its opposite end operatively connected to the roller and arranged to guide said roller, center the same, and hold it constantly against said bearingl member.

2. In an anti-friction side bearing, the combination with plain Hat upper and lower bearing members, of an interposed roller provided with an axle, and a spring at each end of the roller, each spring' being' rigidly secured at one end to one of the bearing members and having' its opposite end connected to the roller axle and serving` to guide said roller, center the same, and hold it constantly against said bearing member'.

8. ln an anti-friction side bearing, the combination with plain flat upper and lower bearing members, of an interposed roller, an

@opten er memes axle extending loosely through said roller, and a spring at each end of the roller, each spring being' rigidly secured at one end to one ot the bearingmembers and having' its opposite end connected to the roller axle and serving' to `gfuide said roller, center the same, and hold it constantly against said bearing' member.

4. ln an anti-friction side bearing, the combination with upper and lower bearing' members, of an interposed roller, and a spiral springl at each end ot the roller with the convolutions thereof parallel to the ends of the roller and operatively connected thereto and arranged to center the same.

5. ln an anti-friction side bearing, the combination with upper and lower bearing' members, of an interposed roller, and a spiral spring' at each end et' the roller, said springs having their convolutions lying in substantially the same plane and having` their outer ends rigidly secured to one of the bearing' members and their inner ends operativelyengaging the roller and centering' the same.

6. ln an anti-friction side bearing, the combination with upper and lower bearing' members, of an interposed roller provided with an axle, and a spiral spring at each end of said roller, said springs having their convolutions in substantially the same plane and having' their outer ends rigidly secured to one or the bearing members and their inner ends connected to the roller axle.

'7. ln an anti-friction side bearing, the combination with upper and lower bearing nfiembers.l of an interposed reller, an axle extending loosely through said rolle-r, and a spiral spring at each end of the roller, said springs having' their convolutions in substantially the same plane and having their outer ends rigidly secured to one of the bearing` members and their inner ends connected to the roller axle.

S. ln an anti-friction side bearing, the combination with upper and lower bearingmembers, an interposed perforated roller, a. spiral spring' at each endot said roller, said springs having their convolutions in substantially the same plane and having` their outer' ends secured to one of the bearing' members and each provided with an eye at its inner end, and a pin extending` through said spring' eyes and the perforated roller and provided with enlargements en its end.

ln testimony whereoil l have hereunto se my hand.

ARNOLD' STUCU. lllitness:

GLENN H. linnnscnn.

this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. 5. 

